326257 has 2 divisors, whose sum is σ = 326258. Its totient is φ = 326256.

The previous prime is 326251. The next prime is 326309. The reversal of 326257 is 752623.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190096 + 136161 = 436^2 + 369^2 .

It is a cyclic number.

It is not a de Polignac number, because 326257 - 2¹¹ = 324209 is a prime.

It is a d-powerful number, because it can be written as 3⁷ + 2¹³ + 2¹⁵ + 6⁷ + 5⁵ + 7² .

It is not a weakly prime, because it can be changed into another prime (326251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163128 + 163129.

It is an arithmetic number, because the mean of its divisors is an integer number (163129).

2³²⁶²⁵⁷ is an apocalyptic number.

It is an amenable number.

326257 is a deficient number, since it is larger than the sum of its proper divisors (1).

326257 is an equidigital number, since it uses as much as digits as its factorization.

326257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 25.

The square root of 326257 is about 571.1891105405. The cubic root of 326257 is about 68.8419683771.

The spelling of 326257 in words is "three hundred twenty-six thousand, two hundred fifty-seven".